Machine for turning pipe-flanges



(N0 Medel.) s sheem-sneen 1.

Z. E. COFFIN. MAGHINE FOR TURNING PIPE PLANGES.

No. 283,376. Patented Aug-.21, 1883.

N4 PEYERS. Phomiflwlrmher. via-m m. u. c

(No Model.) 5 sheets-wheat 2 Z. E. GOFFIN.

MACHINE FOR TURNING PIPE FLANGES.

- No. 283,376. Patented Aug. 21, 18-83.

(No Model.) 5 Sheets-Sheet 3. Z. E. OOPFIN. MACHINE FOR TURNING PIPE FLANGES. No. 283,376.

Patented Aug. 21, 1883.

:iiiwwuiizi (No Model.) 5 Sheets-Sheet 4. Z. E. -UOFFIN, MACHINE FOR TURNING PIPE PLANGES.

No. 283,376. Patented Aug 21, 1888.

, fiyh Parzia! Wbmmu ZZZZM UNrrE STATES fission.

ZEBULON ERASTUS COFFIN, OF NEWTON, MASSACHUSETTS.

MACHINE FOR TURN!NG-PlPE-FLANGES.

SPEGIFIQATION forming part of Letters Patent No. 283,376, dated August 21, 1883.

Application filed August 1, 1881.

To all whom it may concern.-

Be it known that I, ZEBULON E. Gorrnv, of the city of Newton, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Machines for Facing or Turning the Flanges of Pipes; and 1". do hereby declare the following to be a full and-exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.- 1

In ordinary machines for this purpose it is not practicable to face the flanges at both ends of the pipe at the same time and operation.

tion to be faced by means of the machine.

Fig. 2 is an elevation of the same, partly in section. Fig. 3 is an elevation of one end of the bed or ways a, 8.20. Fig. 4 is an elevation of the right-hand head-stock viewed from the posit-ion of the pipe. Fig. 5 is an elevation of the tool-carrying rest, with feed-gearing, &c. Fig. 6 is a plan of the same. The other rest (see Fig. 1) is symmetrical. Fig. 7 is afront elevation of these-me rest, partly in section. Fig.

8 is a sectional elevation, and Fig. 9 is a par tial plan, illustrating the hand-gear and rack for moving the headstock along the bed or ways. Fig. 10 is an elevation, partly in section, of the gears, Sac, contained in the rest. Fig. 11 is a similar partial elevation of the same, viewed from the front. Fig. 12 is a plan of the same. Figs. 3, 4, 5, 6, 7, 8, 9 are drawn on a larger scale than Figs. 1 and 2.

Like letters refer to the same or corresponding parts in all the figures.

A bed or ways of suitable length to provide for taking betweenthe head-stocks the required lengths of pipe, and marked a, is provided with two head-stocks, 1;, arranged to face each other, as shown. One or both of these headstocks 6 are made movable lengthwise uponthe 7 drawn in by the same.

(No model.)

ways a, and the headsto'cks are provided with means whereby they may be fastened to the ways at any required distance from each other.

The rotary spindles of both are geared to and driven by one common shaft, j, extending lengthwise the bed or ways, and suitably driven for that purpose. These head-stocks are both'.live or active ones. The rotating spindle of each is provided with suitable expanding or radially-movable and concentrically-movable dogs or pipe-holders, e.

Two tool-carrying rests, one right and one left, (see one in detail in Figs. 5, 6, and 7, also both are shown in 1,) carrying the tool-block c, are geared to the shaft j, which is splined to receive a feather in the gears m, as well as one in each gear 71 These two rests carry each abutting-tool for simultaneous operation upon both ends or flanges of the pipe f. The dogs e-two, three, or more ina set (three being sufficient)are forced out radially and concentrically by means of a central core-piece provided with inclined or angular grooves, into which they are fitted, and may be retracted or The center core-piece is drawn or moved back and forth to produce this movement by means of the nut attached to hand-wheel d, which fitsa screw-thread on the core-piece. A pipe is shown held in position by the dogs, and is marked f. Rotary motion is communicated to the spindle carrying the dogs e by means of gear 9, which in turn is rotated by gear h on shaft j. (See Fig. 2.) The spindle in each head-stock has its gear g (see Fig. 1) and the interrneshing sleeve-journaled gear h on shaft j, by which it is driven.

- Shaft j is connected by spline or feather to gear h, through which it slips freely as gear h is traversed back and forth for adjustment to accommodate the machine to different lengths of pipes to be faced. Shaft j is driven by gears k l and connected cone-shaft from any suitable power. 1 x

Referring to Figs. 5, 6, 7, a gear, m, is, in like manner to gear h, connected by a feather, be fore alluded to, to shaft 3', which passes through it, and thereby communicates its motion to the feed-gearing in the tool-carrying rest.

A handle, a, (see Figs. 5 and 6,) with eccentric attached, serves, through rod 0 and arm tapergears r q may be left in the intermediate po-- to rock or oscillate the feed-gear frame seen in Figs. 5,6,7, which carries gears q, r, 820., and so to reverse the feed motion by throwing into gear with gear m either gear or gear. a", or, at the pleasure of the operator, to leave both 1" and q disconnected from gear m at the intermediate position, thus leaving the feed undriven by shaft j. The tool-post c is moved by means of the hollow screw s, first by the feed-gears, as described, through the wormwheel 76 and worm a, (see Fig.6;) second, without the feed-gears, by means of the hand wheel or crank 11, Figs. 1 and 5. The sleeve-screw s is made at the end of a taper form, to receive the worm-wheel t, which is bored to fit the A rod with a head to hold wormwheel 25 on passes through the center of screw 8, and is made a screw at the opposite end, to which is fitted the'thumb screw or nut 10. (See Figs. 1 and 5.) The tapers on-screw s and within the worm-wheel 1; form afriction-clutch, which is operated by the nut 20. Vhen this clutch is made to act by turning up the nut 10,1116 screw 8. will be driven by the wormwheel 13,- when released by turning back the nut 10, the screw 3 may be turned by hand to operate the tool-post, as described below.

hen it is desired to "feed by hand, the

sition by means of handle a, &c., as described, or the thumb-screw u; may be loosened, thus releasing worm-gear t on hollow screw 8, allowing said screw to be rotated to feed by hand by means of handle 1). Gear 3 is attached to worm a and is driven by gear 1-, while to the opposite end ofworm u is attached agear which is driven through an intermediate by gear q. The swing-frame carrying gears q and r is marked 2 in Figs. 10 and 12. parts swinging on the shaft which carries worm u, &c., and which are connected to- 'gether' by the journals of gears q r, all which will appear in the drawings. If the pipe is adjusted to project past the dogs 0 a little, the tool will traverse the full width of the flange without danger of interfering with the dogs. The rests are secured in proper position to the ways by means. of bolts in the inverted-T slots in the ways; so, also, with the headstocks. 1n the plan, Fig. 1, is seen the broken connections which join the flange turning machine to its mate or counterpart, for drilling the flanges for bolting together the pipes. In this plan, also, may be seen the rack, and in the elevation, Fig. 2, the pinion (shown in dotted lin es, also in plan) for moving by means of the' indicated -intermediate gearing and hand-wheel, b,the head-stock (one or both may be so fitted) lengthwise of the bed or ways.

It has two The rests may be fitted with like means op- 6 crating upon the same rack for asimilar movement, or may be adjusted by hand lengthwise the bed or ways. The gear h, giving impulse to gear 9, is carried by its sleeve-journal in a suitable stand or bearingsecured to the head- 6 5 stock. The worm-gear t is held to the hollow screw 8 by friction applied by the means of thumb-screw w, as clearly indicated in Figs. 5

and 6.

I claim l. The combination of the sleeve-journaled gears h, their journal-boxes attached to headstocks 5 b, the said head-stocks with their spindles, the spindle-gears g h, and .splined shaft j, constructed to operate together substantially as described.

2. The combination of the rotating spindles, dogs 6, the means for operating said dogs, the head-stocks, gears g h, and shaft j, substantially as described.

3. The combination of the hand-wheelb, the ways a, attached rack, and intermediate gearing with the rotating spindle, head-stock, the concentrically-adj ustable dogs 0, and means for operating the same for the adjustment and centering of the pipe, substantially as de scribed.

4. In combination with the pipe-rotating arbors, the dogs 6, rotating with them to drive the pipe and center it at both ends, the screw- 0 rods with inclines for operating said'dogs e,

the wheel-nuts (1, gears g and h, and shaft j, substantially as and for the purposes set forth.

5. The combination of handle or, its eccentric, rod 0, arm p, rocking frame carrying gears 5 q r, the intermediate gears and screw, a, gear in, shaft j the rest, and the bed, substantially as described.

6. The pipe-turning machine, constructed with the ways a a, heads b, rotating arbors con- 10o taining adjustable dogs 6, hand-wheel d, gears g h, shaft j, hand-wheel b, with intermediate gearing, and rack on bed, all arranged and combined substantially as described.

7. The hollow screw-shaft s, the screw-rod -within worm-wheel t, taper friction-clutch within it, worm u, and attached gears, with the tool-block, rest, and gears 1", q, and shaft j, in combination, substantially as described.

8. The'radial pipe-supporting,pipe-adjust- IIO ing, pipe-driving dogs 6, in combination with the nut d, screw-rod, and inclines which operate saiddogs e, the arbor and head-stock, substantially as and-for the purpose set forth.

ZEBULON ERASTUS OOFFIN. Vitnesses:

JOHN H. STnvnNs, D. N. B. OOFFIN. 

